TERENA Community by wuyunyi

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									           IPT Workshop
           Prague, Czech Republic
           29-30 April, 2010


           Peter Szegedi
           PDO
           szegedi@terena.org
           www.terena.org




TERENA Community

Open up your eyes, codes, and networks
Outline


› About TERENA and its task forces
    › IP Telephony Cookbook
    › GDS admin table
    › GN2 – educonf service


› ENUM vs. NRENum.net

› N-ECS server image
    › TERENA SIP Handbook


› Future of IPT...


Slide 2
About TERENA


    › TERENA offers a forum to collaborate, innovate and
      share knowledge in order to foster the development of
      Internet technology, infrastructure and services to be
      used by the research and education community.




    › TERENA is first and foremost a collaborative
      organisation.
          › Its core business is to bring together managers, technical
            specialists and other people in the research networking
            community with their counterparts from other countries in
            Europe, mobilising the expertise and experience of
            hundreds of professionals in the research and education
            networking area.
Slide 3
Slide 3
   TERENA ‘Voice and Video’ history

› TF-Stream
   › 1999-2001 – use of audio/video streaming and conferencing over the
     Internet
› TF-Netcast
   › 2003-2004 – portal for live streaming announcements
   › IP Telephony Cookbook
› TF-VVC (Voice, Video and Collaboration)
   › 2004-2006 – suitability of voice, video and collaboration technologies
     for NRENs
   › GDS admin table
› TF-VSS (Videoconference Service Studies)
   › 2006-2007 – Europe-wide videoconferencing service for the higher
     education and research communities
› TF-ECS (Enhanced Communication Services)
   › 2006-2008 – collaboration tools and technologies that go beyond
     simple voice and video conferencing
   › NRENum.net service, N-ECS server image and SIP Handbook


› TF-Media (Media Management and Distribution)
   › 2010-2012 – multimedia production, management and distribution
      systems, services
   Slide 4
IP Telephony Cookbook


› Reference document
   › Old one...


› Guidelines and information
  about IP Telephony for
   › NRENs
   › Universities


› Basic, advanced, and
  value-added services

› Global telephony...

                               http://www.patentcopyrighttrademarkblog.com/index.html

Slide 5
H.323 - GDS
NRENs’ initiative

› GDS (Global Dialling Scheme)
     › is an international H.323 numbering plan for the global video and voice over IP
       networks developed by ViDeNet
› H.323 signalling protocol for implementation
     › is a set of standards from the ITU-T, which defines a set of protocols to
       provide audio and visual communication over a computer network



› Benefits of GDS vs. IP
     › Need to abstract IP dialling from the network
     › Dial plan is in line with E.164 numbers


› GDS failed to achieve success (30/195 countries in 2010)
     › IP - less digits to dial...
     › Convince vendors
          › Proportion, sales, marketing – critical mass
          › Need to say: Cool, I want to use GDS!


› Directory service is essential
     › Reaching the critical mass – collect information


Slide 6
From GDS admin table to
GN2 educonf service

› TERENA GDS admin
  table
› Discussion list
    › Migrated to...


› GN2 educonf service
    › Directory (30)
    › Monitoring (13)
    › Support

          ›   Query interface
          ›   Dynamic map
          ›   GDS countries
          ›   Reachability matrix
                                    http://www.calgary-city-maps.com/Calgary-phone-book.html

Slide 7
From GDS admin table to
GN2 educonf service

› Voluntary support
    › TTS, educonf-admins list, wiki
    › Without a home it doesen’t work!


› Downsides of GDS
    › Tree hierarchy needs to be
      administrated/coordinated at all levels
    › No random access (like DHCP) but given
      numbers in a block
› educonf success...?
    › Easy to join – Hard to convince




Slide 8                                  http://educonf.geant2.net/
Dial plan, dialing methods,
protocols

› Digits vs. URI
    › Dial a number or name@domain (easy to remember)
    › Problem for creating unified plan
        › Having a keyboard or remote controller (push vendors)?
        › Having a desktop or room system?


› SIP (Session Initiation Protocol)
    › is a signalling protocol used for establishing sessions in an IP
      network
› H.323 – SIP interoperability/future...?
    › Caller, Trunk, Receiver protocols - Gateways
    › SIP is coming but H.323 will be around for a while
        › Backward compatibility...


› Is there a way to build dial plan to accommodate all, but still
  remain transparent?

Slide 9
ENUM


› ENUM
    › is an IETF standard (RFC 2916) for mapping the public telephone
      number address space into the Domain Name System (DNS)
         › Numerical alias for an URL
         › Back to numbers again...


› Transition:
    › No tree hierarchy - domain lookup can be
      used
    › Lookup ENUM first, if no entry, route
      via GDS


› Top domain operator (Tier-0): RIPE NCC
    › Not available in some countries (47/195
      countries in 2010)
    › Lack of attractive business models



Slide 10
 NRENum.net


› Home for the homeless
   › NREN’s initiative (Tier-0)
      › temporary alternative
        to e164.arpa
   › 10/13 countries in 2010


› Query order
   › e164.arpa (47)
   › nrenum.net (10)


› Separated island...
   › NRENs initiative
   › Public vs. Private trees
                                  http://www.engineeringnews.co.za/article/company-invests-in-container-handler-2009-01-30

 Slide 11
NRENum.net




             https://www.nrenum.net
Slide 12
  N-ECS image and
  TERENA SIP Handbook

› Do It Yourself...
   › ...if you can


› Collection and integration of
  open source components
   › OpenSER
   › Asterisk
   › GNUgk


› Various scenarios...



                                  http://1bog.org/do-it-yourself-solar-power/

  Slide 13
N-ECS image and
TERENA SIP Handbook




           http://www.terena.org/activities/n-ecs/   Secured channel
                                                     SIP
Slide 14                                             H.323
                                                     TDM
People need solution!


› Requirements are clear
   ›   Simplicity
   ›   Availability
   ›   Reliability
   ›   Voice quality
   ›   Video (is cool but not job one)
   ›   etc...

› Need a solution
   › not technology
   › not advices

   › ...that is in the background

Slide 15
                                         http://www.eletter.com.au/index.php
Future of IPT -
Questions

› H.323, SIP, web-based
   › Design principles
   › Open source codes...


› GDS, ENUM, NRENum
   › Numbering/dialing plan
   › End point vs. Person
   › Promotion...


› Local, National, Global
   › Islands vs. Globe
   › Open networks...

                              http://www.leadsexplorer.com/blog/2009/03/09/which-of-these-10-marketing-challenges-applies-to-you


Slide 16
Future of IPT -
Next steps

› GN3 - Videoconferencing service feasibility study
› AVCI group at Internet2

› Webconferencing challenge
   › TNC2010 BoF: ”European Adobe Connect Users
     (EACU) group”
› Videoconferencing progress
   › TNC2010 BoF: ”Collaborating on Collaboration: are
     we going somewhere?”


› Promotions (GN3 PSP)...
› TERENA hands-on training...

Slide 17
Further questions...?




           "Watson, come here! I need you!"


                  www.terena.org
Slide 18
                  szegedi@terena.org

								
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